Bow Spring Centralizers - Varshco Industries

HINGED NON-WELDED BOW SPRING CENTRALIZER

Hinged Non Weld Rigid Centralizers which allow very high fluid passage, are made with a flat-bottom U-profile of different depths. These centralizers can be used for casing as well as tubing applications which need concentric casing strings. It’s structure remove brittle spots and improve durability. These positive centralizers are extremely useful in case of stage and surface cementing. Hinge locking pins are made of high-strength steel for maximum structural strength. Its high performance characteristics are combined with an easy field assembly.

These can be used in combination with Hinged Stop Collar, Hinged Stop Collar with Spiral Nails and few more.

HINGED WELDED BOW SPRING CENTRALIZER

Hinged Welded bow spring centralizer is designed with very low starting and running force while giving the substantial restoring force. These centralizers are designed to exceed the performance requirements of API Specification 10D for both starting and restoring forces. High-quality Bows made of special alloy steel with uniform hardness provide optimum performance. The bows with extended profile prevent them from hitting against casing collars. The centralizers have spring Bows strongly welded onto the outside of the end collars under required temperature and condition with correct grade electrode. Centralizers undergo a special process of rust prevention before powder coating.

These can be used in combination with Hinged Stop Collar, Hinged Stop Collar with Spiral Nails and few more.

Slip-On Welded Bow Spring Centralizer

Slip on welded bow spring centralizer is designed to provide optimum standoff in the minimal clearance wellbores for effective mud removal and cement displacement. Our slip on welded bow spring centralizers are manufactured with solid end rings, requiring the centralizer to be easily installed over the casing.

The bows are made of heat-treated spring steel, which can ensure maximum restoring forces and low running forces. Rust prevented by special Iron Phosphate coating, then coated with Polyester Powder.

Hinged Non-Welded Bow Spring Centralizer with Turbo Fins

Non-welded hinged bow spring centralizers with turbo fins generate a spiral-flow pattern in the slurry, which in turn increase displacement efficiency. Fitted with specially-designed multi-direction turbo fins, these centralizers improve the cleaning action of drilling fluids. Designed for use in vertical, deviated, and horizontal wells. These centralizers reduce the effect of channeling by improving cement flow. The centralizers are also able to minimize gas channeling by reducing the movement of the pipe before the cement sets in.

A non-welded design features the self-locking of lips for holding bows to end collars. These bow springs are manufactured from high-quality spring steel and heat-treated to achieve minimum starting and running forces. The heat-treated alloy provides flexibility while minimizing damage when moving down hole. These can be used in combination with Hinged Stop Collar and Hinged Stop Collar with Spiral.

Hinged Welded Bow Spring Centralizer with Turbo Fins

Welded hinged bow spring centralizers with turbo fins induce a spiral-flow pattern in the slurry, thereby increasing displacement efficiency. Fitted with specially-designed multi-direction turbo fins, these centralizers improve the cleaning action of drilling fluids, distribute the cement slurry into wellbore irregularities and minimize channeling. A welded design features bow springs strongly welded to its end collars. Welded centralizers have more running force when compared to their non-welded counterparts. Designed for use in vertical and slightly deviated wells.

Bows of special alloy steel are hot-formed and then tempered for uniform hardness and optimum performance. The turbo fins are made of alloy steel in an annealed state and are attached to the bows from inside. These can be used in combination with Hinged Stop Collar and Hinged Stop Collar with Spiral and few more.

Slip-On Welded Bow Spring Centralizer with Turbo Fins

Slip on Welded Centralizers with Turbo Fins have bow springs strongly welded to the single piece end collars under required temperature conditions with correct grade electrode. Slip on welded centralizer with turbo fins are easy to install on the casing rack. Special Turbo fins provided on the bows creates turbulence during cementing improving the placement of cement slurry. Bows are welded to slip on end collar providing better structural robustness, can withstand more side and lateral loads and can be configured for any hole dia from choice of five standard bow heights for optimum starting and restoring forces.

Premium quality Bows made of special alloy steel with uniform hardness provides optimum performance. These can be used in combination with Hinged Stop Collar and Hinged Stop Collar with Spiral and few more.

Hinged Non-Welded Semi Rigid Bow Spring Centralizer

Non-weld Semi Rigid Centralizers has the combining features of Standard Spring Bow Centralizers and Rigid Centralizers. It has the ability to withstand high lateral load encountered. This device ensures high efficiency in casing jobs on Deviated and Horizontal wells. It has high Restoring force and high Stand Off with low Running Force which is ideally suitable for Deviated and Horizontal wells where load on springs are maximum. Compared to other Spring Bow Centralizers this device attains high Stand Off because of high Restoring force. It increases contact area for less Bow penetration, which helps in complete Mud removal while cementing.

HINGED WELDED SEMI-RIGID BOW SPRING CENTRALIZER

Hinged Welded Semi rigid Centralizer ensures high efficiency in casing. The Centralizers have double crested Bow Spring strongly welded to the End Collar under required temperature and condition with extra low Hydrogen coated Electrodes, which assures ultimate strength and uniformity in every weld. Integral hinge folded on the inside stay intact even under extreme stress. These Centralizers are available with combination of Bows configure from choice of four standard Bow height for optimum starting and Restoring Force.

Slip-On Welded Semi Rigid Bow Spring Centralizer

Slip-on welded semi-rigid bow spring centralizers ensure high efficiency in casing jobs on deviated and horizontal wells. Combining the features of a standard bow spring centralizer with those of a rigid centralizer, these centralizers provide a very high restoring force in combination with a very low starting force for centralizing the casing. The spring characteristics permit compression and facilitate movement through tight spots.

End collars are of widened-design for greater frame strength and to prevent the bows from hitting the casing. The compatibility of the bows with various end collar sizes reduces inventory requirements and provides tremendous flexibility of casing and hole size combinations.

Hinged Non-Welded Positive Bow Centralizer

Non Welded Positive Bow Centralizers are uniquely designed with flat bottom "U" profile of various depths thus permits maximum fluid passage. The Centralizers significantly reduce frictional drag while being used in deviated holes. They are supplied with 6 mm less than the inside diameter of the hole size in which Centralizer is to be run. End Collars are designed with self-locking action, which are easy to assemble, time saver and have strong grip.

These Bows with extended profile prevent them from hitting against casing collars. Constructed from high quality steel, the design ensures that almost 100% stand-off is achieved when run inside a cased hole. Bows are of high quality steel for consistent characteristics.

Rotating Welded Centralizer

The centralizers allow free rotation of the pipe for maximum displacement efficiency. Rotating Centralizer can be used with a rotating liner in highly deviated well conditions. The centralizers have a high restoring force which provides optimum standoff and low moving force to minimize drag. They meet or exceed API 10D specifications.

Slip on design helps in ease of installation on casing rack. Rotating centralizers are suited for vertical and deviated well applications with Slip-On Stop Collar and with Set Screws on One Side Beveled.

Drill Pipe Centralizer

Drill Pipe Centralizer is used to centralize drill pipe, especially to ensure that inner string stab-in stinger is in center and properly in alignment with the corresponding float equipment. Installation on the drill pipe is very convenient since it simply requires the placement of the two assembled halves on the pipe and the insertion of the pin in the end collar hinge. It is used in stab-in inner string cementing applications.

The bows are heat treated and have spring action property for passing through restrictions. The centralizer when unassembled makes a compact package, greatly reducing shipping cost, its assembly on site is straightforward.

Single Piece Centralizer

Single Piece Centralizer is integrated steel flexible Centralizer designed to centralize casing during the cementing stage of oil wells. Fully integrated centralizers can be manufactured in any diameter and as per customer requirements.

The blades, top and bottoms rings are made of one piece to ensure the centralizer's integrity duringrig operations. The specifications comply with API Spec 10D for starting compression, running downhole and expansion forces.

These centralizers offer high fatigue strength for axial forces and radial side loads on bows during tubular rotation. More flexibility as comparison to other spring bow centralizer.